Low Idle when coming to a stop at light .

1996 Ranger 2.3 140 CID XLT 126,000 Miles.
When coming to a stoplight or stopping the engine idle is low and causing
engine to almost die. Engine has been stuck at high idle a couple of times. It started with the engine idle slowly coming down and now it its too low.
I suspect the Idle air control valve. Any other thoughts?
TIA

Replaced Idle air control valve and that fixed problem. I also found deteriorated vacuum hose which was also contributing to problem.